Inflatable obstacle



FIG. 1 is a front and right side perspective view of an inflatable obstacle in accordance with the new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a top, front, and left side perspective view thereof;

FIG. 4 is a rear and left side perspective view thereof; and,

FIG. 5 is a rear and right side perspective view thereof.

The bottom view is flat and unornamented and forms no part of the claimed design. The portions of the figures shown in contrast, along with the parts of the figures shown in broken-line perimeter, illustrate portions of the inflatable obstacle that form no part of the claimed design. 

CLAIM The ornamental design for an inflatable obstacle, as shown and described. 